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NGC 7129 and NGC 7142

The reflection nebula NGC 7129 is an open cluster star-forming region containing over 130 very young stars at a distance of 3'300 lightyears. Star forming activity results in a couple of HH objects visible in this image.

In contrast, the open cluster NGC 7142 lies about 6'200 lightyears away and is thought to be old even that it contains many blue stragglers.